1813,] Royal Society. 465 



tance north-west from Madras. It occurs in nests in primitive 

 trap. It is an anhydrous carbonate of copper, and was composed 

 of the following constituents : — 



Carbonic acid 16*7CT 



Black oxide of copper 60*75 



Red oxide of iron 19*50 



Silica 2*10 



Loss 0*95 



100*00 



The silica was accidental, proceeding from small quartz crys- 

 tals interspersed in the ore. The red oxide of iron was probably 

 only mechanically mixed, as it differed in quantity in different 

 specimens. Two other native species of carbonate of copper 

 were already known; namely, malachite and blue copper ore: 

 but both of these are hydrates ; the first containing two integrant 

 particles of water, the second one. The ore described in this 

 paper was anhydrous. 



LINN.EAN SOCIETY. 



The Society resumed its meetings on the 2d of November. A 

 specimen of convolvulus jalappa (jalap of the shops) raised in a 

 stove in England was exhibited to the Society by A. B. Lam- 

 bert, Esq. 



Dr. Leach laid before the Society a shell (a species of Venus) 

 found in the transition clay-slate of Plymouth, and a similar 

 shell found upon the top of Snowdon in a rock, presumed like- 

 wise to be transition slate. I may take this opportunity of men- 

 tioning, that I have been informed by the same Gentleman that 

 he has seen madreporites in the transition lime-stone of Plymouth. 



Mr. Sowerby presented to the Society a new genus of shell (a 

 bivalve), found among the rubbish of the West India Docks. 



A paper, by Benjamin Smith Barton, M.D. of Philadelphia, 

 was read, describing a new species of Syren, found in Georgia, 

 called the Syren striata. The paper contained likewise a descrip- 

 tion of another species, called Syren tetrapus. 



There was read also a description of some plants growing on 

 Mount Caucasus, by Mr. Stephen. This paper was sent from 

 Moscow; for the Natural History Society of that city, in conse- 

 quence of its late destruction by lire, will not for some time Le 

 in a condition to resume the printing of their papers. 



Part of a paper, by I-)r. Leach, was likewise read, giving a 

 corrected character of the genus mc/uc, and describing six exotic 

 species of that genus. 



On the 1 6th of November the remainder of Dr. Leach's 

 paper on different specie* of meloe was read. As this paper 



Vol. II. N° VI. 2 G 



